<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8"/>
    <title>Vue示例</title>

</head>

<body>
<div id="app" style="display: none" v-show="show">
    {{date}}
</div>
<script charset="utf-8" src="../js/vue.min.js" type="text/javascript"></script>
<script type="text/javascript">
    new Vue({
        el: '#app',
        data: {
            show: true,
            date: new Date()
        },
        mounted: function () {
            var _this = this; //声明一个变量指向Vue实例this，保证作用域一致
            this.timer = setInterval(function () {
                _this.date = new Date(); //修改数据date
            }, 1000);
        },
        beforeDestroy: function () {
            if (this.timer) {
                clearInterval(this.timer); //在Vue实例销毁前，清除我们的定时器
            }
        }
    })
</script>
</body>

</html>